Light-emitting keyboard

Abstract

The present invention is related to a light-emitting keyboard, comprising: a light guide having a light entrance surface, a bottom surface and a light exit surface; a light source provided adjacent to the light entrance surface of the light guide; a first reflector disposed underneath the bottom surface of the light guide to reflect the light originated from the light source to enter into said light guide; a second reflector disposed on top of said light exit surface of the light guide; a membrane circuit board disposed on top of said second reflector, said membrane circuit board being provided with an elastic member; a supporting plate disposed on top of the membrane circuit board; a scissor assembly engaged with said supporting plate and provided thereon; and a keycap supported by said scissor assembly.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a keyboard and in particular, to a light-emitting keyboard; said keyboard may be of lower manufacturing costs, greater luminance and effective circuit design with a more secure structure.[0003]2. Description of the Related Art[0004]With the popularity of computer, users not only pursue better computer efficiency but also pay more attention to the function and design of computer accessories such as mouse and keyboard. As computer has become an indispensable device in nearly every aspect of modern life from telecommunication, commerce, editing to graphics design, some manufacturers equip keyboard, one of the most important input devices for computer, with backlit keys so that the user can perform input tasks under inadequate lighting. Besides, the back lighting makes the keyboard look fancy.[0005]Referring to the description on a light-emitting keyboard of ROC Publication No. 509955, the k...

AI Technical Summary

Benefits of technology

The present invention provides a light-emitting keyboard with a scissor assembly and a membrane circuit board. The scissor assembly connects the lower ends to a supporting plate and the upper ends to a keycap. The membrane circuit board has an elastic member that passes through an opening in the supporting plate and the scissor assembly to engage with the keycap. The keyboard has greater luminance and a reflector to enhance the reflection and retroreflection of light. The reinforcement board secures the membrane circuit board and the supporting plate. A water-resistant layer protects the keyboard from infiltrated liquid. The light source is controlled by a base circuit board or the membrane circuit board. The light guide has a light entrance surface, a bottom surface, and a light exit surface, and the light originates at the light entrance surface and radiates out via the light exit surface.

Problems solved by technology

Such design and structure inevitably increase the number of openings required on the membrane circuit board to allow the respective ends of all the scissor structures to pass therethrough and also unfavorably cause an increase in the complexity of the design and layout of the circuit as well as the manufacturing costs of the keyboard.

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